You kinda lost me there lol, do you mean like the ohms and voltage that my mod is putting out?
PG = Propylene Glycol
It is a flavor carrier and has a sharper throat hit. Its much thinner and wicks very easily but its a bit harsher on the lungs and throat.
VG = Vegetable Glycerin
Softer on the lungs and throat, what produces the clouds, a bit sweet by nature doesn't carry flavor as well as PG so "steeping" is generally a good idea.
PG and VG are two of the most prominent ingredients in your juice. The balance between them is called the PG/VG ratio. With higher VG you will get bigger clouds and a smoother vape, with higher PG less clouds and more flavor.